Chapter 11 TR Output Option Board
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(2) Position control
Position control is to move the designated axis from start address (present position) up to target address
(movement). There are two position control methods, absolute and incremental.
(a) Control by absolute coordinates (Absolute coordinates)
Object moves from start address to target address. Position control is performed, based on the address
designated in Home Return (home address).
Direction is determined by start address and target address.
• Start address < target address: forward positioning
• Start address > target address: reverse positioning
(b) Control by incremental coordinates (incremental coordinates)
Object moves from current position as far as the address set in operation data. At this time, target address
is based on start address. Direction is determined by sign (+,-).
• In case Address is positive number: forward positioning (Direction increasing address)
• In case Address is negative number: reverse positioning (Direction decreasing address)
(3) Speed control
Speed control means that object moves with steady speed (steady pulse string) until stop command.
• In case of speed control, direction is determined by sign of Address set in operation data.
Forward : Address is positive number
Reverse : Address is negative number
In the speed control, direction is determined by sign of target address regardless of current position and
target position.
For example, current position is 100 and target position is 90, though target position is less than current
position, since sign is positive, it moves forward.
• For more information, refer to XGB positioning manual.
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